Pneumatic tire.



No. 627,785. Patented :une 27, |899. F. w. vl-:AzlE & J. s. PATTERSON.

PNEUMATIC TIRE.

(Application Bled Apr. 28, 1899.)

UNITED STATES- PATENT GFFIOE.

FRA-NCIS W. vEAZIE ANDJOHN s. PATTERSON, or CHELSEA,A MAssAOHu sETTsAssIGNORs To THEMsELvEs, AND WILLIAM I-IILLMAN, OF MOUNT VERNON, NEW YORK. Y

PN Eu MA1-Ic TIR.

sPEoI'FIoAtrIoN forming part 'of :Letters Patent No. 627,785, dated .Tune 2v, 1899.

Application tiled April 28, 1899. Serialll'o. '714:303- l(N0 111011613 y and JOHN S. PATTERSON, citizens of the UnitedA States, residing at Chelsea, in the county of Suolk and State of Massachusetts, have in,- vented an Improvement in Pne'u matic Tires, of Which the following isa specification.

Our improvement relates especially to pneu-- matic tires formotor or horseless vehicles. Heretofore in tires ofv this class difficulties have been encountered in holding the tires which are of large area to the rim or felly of the wheel, because o`f the lateral strain and the tendency Of the tire to creep on the rim in use, and our invention is designed to obviate these difficulties. f

In carrying out our inventionwe employ a tire-shoe divisible at the center over the felly or rim of the wheel, and We employ an inner tube having an. air-valve, which air-valve passes through the shoe and the rim at a convenient place.

Each tire-shoe is provided with annular lside projections,.and the tire-shoe is "made with enlarged bases adapted to rest upon the fiat surface of the felly or rim of the Wheel.Y

We provide side flanges of metal having ribs near their edges, and bolts pass through .the anges and the felly or rim for securing the flanges to the rim. y

The annular side projections of the tire-4 shoe nd seats in the ribs o f the flanges, said ribs and annular projections being preferably semicircular. We provide metal rings mold# ed iu the enlarged bases of the,tireshoe, and

these metal rings are made with dovetailed' Wheel transverse undercutv ribs at intervals' in the circumference of the rim agreeing With the dovetailed grooves of said metal rings and the bases of the tire-shoe.

, The tire-shoe, with the inner tube, is passed from one side of the Wheel overthe transverse ribs, and when the flanges are secured to the felly or rim the said ribs preventthe tire creeping on the rim in use, they hold the same securely in place, and the ribs on theanges prevent lateral I notion of the tire and chafing at the rim and also give a more secure seatvto the tire.

In the drawings, Figure lisa cross-section andpartial elevation representing our improvement. Fig. 2 is a vertical section of a segment ofthe tire and rim of smaller size. Fig. 3 is a side elevation of part of one of the l metal rings to be molded in the base of the 6o tire, and Fig. 4 is a cross-section at the linev m a: of Fig.`2. Figs. 2, 3, and et are drawn to the same scale, Fig. l being an enlarged crosssection at y y of Fig. 2;

The inner tube is represented at a, the tire- Vshoe at b, the bases of the tire-shoe at b', and

the annular side projections at c c. The felly or rim of the wheel is shown at d and 'the side iianges, which are preferably of heavy metal, at e e', made with ribs f f', and 7o g are the bolts passing 'through the felly or rim and through the side anges at intervals for securing the said side flanges rigidly to the felly'or rim.

The metal rings h are provided With dovetailed notches at intervals in the circumfere ence of the ring, the said notches being cut into the ring from the inner edge. Each of the enlarged bases of the tire-shoe has one of said rings molded therein, as shown in the 8o cross-section, the precise manner of molding said rings into said bases or holding the same securely to said bases forming no part of our present improvement, The rubber is grooved transversely in line with the notches.

The transverse undercut ribs are shown at k.. These We secure to the outer surface of the felly or rim'gd of the Wheel at intervals that correspond with the dovetailed grooves 1I in the rings h. These undercut ribs are 9o preferably .secured to the rim of the wheel by screws, as shown', although with a rim of metal rivets would probably be employed.

In assembling the parts and putting the tire upon the rim of the Wheel the tire-shoe is sprung open at the center division-line 3' and the inner air-tube inserted. The tireshoe is then placed against one side face of the Wheel with the dovetailed grooves of the rings and tire-shoe coinciding with the transroo verse undercut ribs. Thev tire-shoe is then slid forcibly upon the Wheel against ,one of the side flanges, which is'preferably left upon the other side of the Wheel. The other side flange is now put in place and the flanges secured to the rim by the bolts g. The tire is then inliated with air and ready for use. This manner of fastening-With the dovetailed grooves, the rings, and the transverse undercut ribs-connects the parts rigidly together and also prevents the tire creeping on the rim in use, and the side flanges prevent lateral motion of the tire, and their ribs form efficient seats for the annular projections of the tire-shoe and prevent chafng at the rim.

We claim as our invention- 1. The combination with the felly or riln of' the Wheel and an inner tube, of the tirevshoehaving enlarged' bases and annular `proj ections, side flanges and bolts for connecting the flange to the felly or rim, there being ribs upon the flanges forming seats for the annular projections of the shoe and means for securing the shoe at its enlarged bases to the rirn of the Wheel, substantially as set forth.

2. The combination With the felly or rim of the wheel, and the tire-shoe having enlarged bases, of anges and bolts passing through the same and the felly or rim for securing the flanges at opposite sides, rings molded in the bases of said tire-shoe and projections upon the rirn of the wheel-tire to eugage said rings to hold the tire-shoe in place upon the rim, substantially as set forth.

3. The combination with the Wheel-rim and the tire-shoe having enlarged bases adapted to rest upon the Wheel-rim, of side flanges and bolts for securing the same to the rim, metal rings molded in the bases of the tire-shoe and setting edgewise, said rings being provided at intervals with dovetailed notches and the tire-bases grooved in line therewith, transverse undercut ribs fastened to the peripl1- ery of the felly or rirn at intervals agreeing with and fitting the d'ovetailed grooves to se.

cure the tire-shoe to the rim and prevent the tire creeping on the rim, substantially as set forth. A

4f. The combination with the rim or felly ,j

. of the felly or rim atintervals With and fitting the dovetailed grooves to secure the tire-shoe to the rim and prevent the tire creeping thereon, substantially as set forth.

SignedA by us this 22d day of April, 1899.

FRANCIS W. VEAZIE. JOHN S, PATTERSON.

Witnesses:

A. A. FICKETT, EDWIN H. OURRY. 

